Viessmann EM-S1 Solar Extension Module (7722519)

The Viessmann EM-S1 Solar Extension Module is designed to control heating systems with solar DHW heating functions.

• Control and display via the heat generator control unit
• Switching the solar circuit pump
• Solar circuit pump speed control via PWM signal
• Only use solar circuit pumps with PWM input.
• Suppression of DHW cylinder reheating by the heat generator subject to solar yield
• Collector safety shutdown
• Electronic temperature limitation in the DHW cylinder
• Switching of a transfer pump for the DHW cylinder
• Interval function
• Frost protection function

Kit contains:

• 1x ADIO Electronic Module
• 1x EM-S1 Label
• 1x 20K NTC Solar Collector Sensor
• 1x 10K NTC Hot Water Cylinder Sensor
• 1x PlusBus Cable
• 1x Power Cable
• Cable Connectors (1x TS Connector, 1x PWM Connector, 1x 40A Connector, 1x P1 Connector (24), 1x P3 Connector (46))
• 4x Cable Clamps & Screws
• 3x Fixing Screws & Wall Plugs
• 4x Cable Grommets

Installation instructions

Compatible with Viessmann System Boilers